ASoC: tas2781: remove unused acpi_subysystem_id

The acpi_subysystem_id is only written and freed, not read, so
unnecessary.

Signed-off-by: Gergo Koteles <soyer@irl.hu>
Link: https://lore.kernel.org/r/454639336be28d2b50343e9c8366a56b0975e31d.1707456753.git.soyer@irl.hu
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: tas2781: add module parameter to tascodec_init()

The tascodec_init() of the snd-soc-tas2781-comlib module is called from
snd-soc-tas2781-i2c and snd-hda-scodec-tas2781-i2c modules. It calls
request_firmware_nowait() with parameter THIS_MODULE and a cont/callback
from the latter modules.

The latter modules can be removed while their callbacks are running,
resulting in a general protection failure.

Add module parameter to tascodec_init() so request_firmware_nowait() can
be called with the module of the callback.

Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver")
CC: stable@vger.kernel.org
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Link: https://lore.kernel.org/r/118dad922cef50525e5aab09badef2fa0eb796e5.1707076603.git.soyer@irl.hu
Signed-off-by: Mark Brown <broonie@kernel.org>

ALSA: hda/tas2781: add ptrs to calibration functions

Make calibration functions configurable to support different calibration
data storage modes.

Signed-off-by: Gergo Koteles <soyer@irl.hu>
Link: https://lore.kernel.org/r/5859c77ffef752b8a9784713b412d815d7e2688c.1703891777.git.soyer@irl.hu
Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: hda/tas2781: move set_drv_data outside tasdevice_init

allow driver specific driver data in tas2781-hda-i2c and tas2781-i2c

Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver")
CC: stable@vger.kernel.org
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Link: https://lore.kernel.org/r/1398bd8bf3e935b1595a99128320e4a1913e210a.1703204848.git.soyer@irl.hu
Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: hda/tas2781: do not use regcache

There are two problems with using regcache in this module.

The amplifier has 3 addressing levels (BOOK, PAGE, REG). The firmware
contains blocks that must be written to BOOK 0x8C. The regcache doesn't
know anything about BOOK, so regcache_sync writes invalid values to the
actual BOOK.

The module handles 2 or more separate amplifiers. The amplifiers have
different register values, and the module uses only one regmap/regcache
for all the amplifiers. The regcache_sync only writes the last amplifier
used.

The module successfully restores all the written register values (RC
profile, program, configuration, calibration) without regcache.

Remove regcache functions and set regmap cache_type to REGCACHE_NONE.

Link: https://lore.kernel.org/r/21a183b5a08cb23b193af78d4b1114cc59419272.1701906455.git.soyer@irl.hu/

Fixes: 5be27f1e3ec9 ("ALSA: hda/tas2781: Add tas2781 HDA driver")
Acked-by: Mark Brown <broonie@kernel.org>
CC: stable@vger.kernel.org
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Link: https://lore.kernel.org/r/491aeed0e2eecc3b704ec856f815db21bad3ba0e.1703202126.git.soyer@irl.hu
Signed-off-by: Takashi Iwai <tiwai@suse.de>

ASoC: tas2781: fixed register access error when switching to other chips

fixed register access error when switching to other tas2781 -- refresh the page
inside regmap on the switched tas2781

Signed-off-by: Shenghao Ding <shenghao-ding@ti.com>
Link: https://lore.kernel.org/r/20230817093257.951-1-shenghao-ding@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: tas2781: Add tas2781 driver

Create tas2781 driver.

Signed-off-by: Shenghao Ding <13916275206@139.com>
Link: https://lore.kernel.org/r/20230618122819.23143-3-13916275206@139.com
Signed-off-by: Mark Brown <broonie@kernel.org>